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Research ArticleMEMBRANES, TRANSPORT AND BIOENERGETICS
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Fine-Tuning of Photosynthesis Requires CURVATURE THYLAKOID1-Mediated Thylakoid Plasticity

Mathias Pribil, Omar Sandoval-Ibáñez, Wenteng Xu, Anurag Sharma, Mathias Labs, Qiuping Liu, Carolina Galgenmüller, Trang Schneider, Malgorzata Wessels, Shizue Matsubara, Stefan Jansson, Gerhard Wanner, Dario Leister
Mathias Pribil
Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, GermanyCopenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, DK-1871 Frederiksberg C, Copenhagen, Denmark
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  • ORCID record for Mathias Pribil
  • For correspondence: pribil@plen.ku.dk
Omar Sandoval-Ibáñez
Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, DK-1871 Frederiksberg C, Copenhagen, Denmark
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  • ORCID record for Omar Sandoval-Ibáñez
Wenteng Xu
Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany
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Anurag Sharma
Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, DK-1871 Frederiksberg C, Copenhagen, Denmark
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Mathias Labs
Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany
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Qiuping Liu
Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany
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Carolina Galgenmüller
Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, GermanyCopenhagen Plant Science Centre, Department of Plant and Environmental Sciences, University of Copenhagen, DK-1871 Frederiksberg C, Copenhagen, Denmark
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Trang Schneider
Institut für Pflanzenwissenschaften, Forschungszentrum Jülich, 52425 Juelich, Germany
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Malgorzata Wessels
Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 901 87 Umea, Sweden
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  • ORCID record for Malgorzata Wessels
Shizue Matsubara
Institut für Pflanzenwissenschaften, Forschungszentrum Jülich, 52425 Juelich, Germany
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Stefan Jansson
Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, 901 87 Umea, Sweden
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Gerhard Wanner
Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany
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Dario Leister
Plant Molecular Biology (Botany), Department Biology I, Ludwig-Maximilians-Universität München, 82152 Planegg-Martinsried, Germany
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Published March 2018. DOI: https://doi.org/10.1104/pp.17.00863

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  • © 2018 American Society of Plant Biologists. All Rights Reserved.

Abstract

The thylakoid membrane system of higher plant chloroplasts consists of interconnected subdomains of appressed and nonappressed membrane bilayers, known as grana and stroma lamellae, respectively. CURVATURE THYLAKOID1 (CURT1) protein complexes mediate the shape of grana stacks in a dosage-dependent manner and facilitate membrane curvature at the grana margins, the interface between grana and stroma lamellae. Although grana stacks are highly conserved among land plants, the functional relevance of grana stacking remains unclear. Here, we show that inhibiting CURT1-mediated alteration of thylakoid ultrastructure in Arabidopsis (Arabidopsis thaliana) reduces photosynthetic efficiency and plant fitness under adverse, controlled, and natural light conditions. Plants that lack CURT1 show less adjustment of grana diameter, which compromises regulatory mechanisms like the photosystem II repair cycle and state transitions. Interestingly, CURT1A suffices to induce thylakoid membrane curvature in planta and thylakoid hyperbending in plants overexpressing CURT1A. We suggest that CURT1 oligomerization is regulated at the posttranslational level in a light-dependent fashion and that CURT1-mediated thylakoid plasticity plays an important role in fine-tuning photosynthesis and plant fitness during challenging growth conditions.

  • Received July 6, 2017.
  • Accepted January 12, 2018.
  • Published January 26, 2018.
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Fine-Tuning of Photosynthesis Requires CURVATURE THYLAKOID1-Mediated Thylakoid Plasticity
Mathias Pribil, Omar Sandoval-Ibáñez, Wenteng Xu, Anurag Sharma, Mathias Labs, Qiuping Liu, Carolina Galgenmüller, Trang Schneider, Malgorzata Wessels, Shizue Matsubara, Stefan Jansson, Gerhard Wanner, Dario Leister
Plant Physiology Mar 2018, 176 (3) 2351-2364; DOI: 10.1104/pp.17.00863

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Fine-Tuning of Photosynthesis Requires CURVATURE THYLAKOID1-Mediated Thylakoid Plasticity
Mathias Pribil, Omar Sandoval-Ibáñez, Wenteng Xu, Anurag Sharma, Mathias Labs, Qiuping Liu, Carolina Galgenmüller, Trang Schneider, Malgorzata Wessels, Shizue Matsubara, Stefan Jansson, Gerhard Wanner, Dario Leister
Plant Physiology Mar 2018, 176 (3) 2351-2364; DOI: 10.1104/pp.17.00863
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Plant Physiology: 176 (3)
Plant Physiology
Vol. 176, Issue 3
Mar 2018
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